Saturday, November 10th, 2012 AT 12:50 AM
My S-40 has developed a sporadic "whine" at times at idle and always upon deceleration in drive. When I pull the oil dip stick I hear a release of considerable pressure and the "whine" disappears while the dipstick is removed. Any cluse as to what this is? One mechanic recommended replacing the oil trap, he said it was clogged, leading to the increased pressure. Does this sound correct, and if so, can this "clog" be cleaned to avoid replacing the entire oil filter housing assembly?